[help]820-00165 TOTALLY DEAD! NO LED LIGHT CHARGER

[phantom]

i don't know the history of this motherboard...i've found in diode mode a super low value on pp3v42_g3h...removing l7095 and l7090, i've injected voltage on the line and found that u5000 become hot (3v 0,0100 amp)

should i reball it? should i change it?

 

[2informaticos]

Change it...

 

[phantom]

ok now i have
PPBUS_G3H=8.18
3V42_G3H=3.42
3V3_S5 3,3
no voltage for PP3V3_SUS (no shorts
on u8020 i have 0v on P3V3SUS_EN no shorts
0v on R1464 no shorts

 

[2informaticos]

Maybe bad SMC, or solders.
Did you get it from same model board?

Check SMC_ADAPTER_EN, PM_BATLOW_L, PCH_DSWVRMEN, PM_DSW_PWRGD and the 4 PCH's RTC signals.

 

[phantom]

ppvrtc_g3h shorted!

smc brand new...

 

[2informaticos]

VRTC_G3H goes from U1900 to PCH.
SMC is not connected there.

What means "brand new"?

 

[phantom]

i mean bought new, not from donor board

SMC_ADAPTER_EN, 0v
PM_BATLOW_L, 3,3
PCH_DSWVRMEN, 0v
PM_DSW_PWRGD 0,9v

 

[phantom]

is it normal that ppvrtc_g3h is shorted?

 

[2informaticos]

Not normal.
Check first the capacitors connected there.
If still short, remove u1900 and check again.
Lastly bad PCH...

SMC must be programmed with corresponding firmware for your board!!!

 

[phantom]

I can’t see anything hot under thermal camera….i will try to remove u1900

How can I program smc?

 

[phantom]

Not normal.
Check first the capacitors connected there.
If still short, remove u1900 and check again.
Lastly bad PCH...

SMC must be programmed with corresponding firmware for your board!!!

Video 27-02-24, 09 05 29.mov

Shared with Dropbox

www.dropbox.com

Ppvrtc_g3h: game over?

 

[phantom]

i'm too scared that pch is dead

 

[2informaticos]

Did you do what I mentioned before?
Why do you post a video, instead of simple answers?

 

[phantom]

Yes and short persists also removing u1900

 

[2informaticos]

Did you also remove the 4 caps connected there?